Machine for making hollow glass articles.



1?. T. SI'BVERT.

- MACHINE FOR MAKING HOLLOW GLAS APPLICATION TILED JUL S ARTICLES. 1 29,meg.

[17/0616 Z02)- I Pall/l Z'Jeveri mill/665195:

P. T. SIBVERT.

mcmm FOR MAKING HOLLOW GLASS ARTIGLBS. APPLICATION TILED JULY 29,1909

Eatented. M31226, 1910.

3 SHEETS-SHEET 2.

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P. T. $IEVERT. FOR MAKING HOLLOW G APPLIOATION TILED JULY LAss ARTICLES.

MAGHINE In RW mm n S as Ina/62250;.- Paul Z J wa /Z,

Winesses:

' bearing the Serial No. 492,001.

glass or a previously-shaped glass body is able to reheat the madehollow PAUL THEODOR SIEVERT,

OF DRESDEN, GERMANY.

MACHINE FOR MAKING HOLLOW GLASS ARTICLES.

Oriisinal application filed April 24, 1909, Serial No.492,001.

Specifieationof Letters Patent.

Patented A )r. 26, 1910. Divided and this application filed July 29,

Serial No. 510,207.

To all whom it may concern:

Be it known that I, PAUL 'lirnooon Sn:- vER'r, manufacturer, a subjectof the King of Saxony, German Empire, residing at Xiirnbergerstrasse 46,Dresden A., Kingdom of Saxony, Germany, have invented certain new anduseful Improvements in Machines for Making Hollow Glass Articles, ofwhich the following is a specification.

My invention relates generally to machines for making hollow glassarticles and particularly to apparatus used in heating layers of glassor previously-shaped glass bodies carried by a frame attached to acarrier.

This application is a division of an appli cation filed by me on April24, 1009, for machine for making hollow glass articles, and

I have already shown processes of and machine's for making hollow glassbodies, in which a carrying-frame holding a layer of connected with ahead or carrier attached to a vertically-movable, preferably also revoluble, vertical shaft having an axial bore for supplying compressed airinto the hollow body which is being made, as, for example in my LettersPatent 825,160 dated July 3rd, 1906.

According to one of such processes or by means of such machines thelayers of glass or the previouslyshaped glass bodies, which are firstcooled as required, particularly in their central portions, are loweredinto a heating-chamber or fire-drum under the shaft or blowing-pipehead, in order to bring the whole body to as uniform a temperature aspossible, which operation repeated as is necessary during the furthertreatment of the hollow body. The final shape is given to tllr, nollowbodies by blowing them out with compressed air while they are connectedby the carrying-frame with the blowing-pipe head. As inthe processdescribed in the Letters Patent 825,160 mentioned above, the hollowbodies can be blown in molds'which give them the'klesired shape. If ironmolds are used for this, it is'preferbodies generally frequentlyrepeatedly for a short time in the heating-chamber, in order to equalizethe rapid cooling of the outer layers of glass occasioned by the iron.The

frames, which according to the mentioned Letters Patent carry the glasslayers or previously-slnlpedglass bodies, are connected with theblowing-pipe head by screws. catches or other suitable nieclmnicalmeans, but preferably by electronmgnetic clutch devices, when of coursethe windings of the electromagnet must be suilicientiy 110aproof.

When this process is carried into practice with the described machines,the blowingpipe head and the carrying-frame must of course fit oneanother exactly and tightly, so that no compressed air escapes at thejoint. But since the form of the carrier or carrying-frame variesaccording to the shape of the hollow body which is to be made, for everyshape of blowing-pipe head would have to be provided, and theblowing-pipe head would have to be changed each time it was wished tochange from making one definite kind of hollow vessel to another kind.This sul stitution is of course wasteful of time each time andnecessitates a very large number of difi'erent bl.o\\-'ingpipe headswhich is avery expensive matter particularly when electromagnetic clutchdevices are employed. It is true that when making cylinders for tableglass the drawback is not met with, because the diameters when oncefixed for such cylinders are not frequently changed. But when makingother hollow vessels, of which in many instances no very large number isordered, and in which the form of the upper rims is very diii'erent, c.1 round, oval angular and so on, the drawback mentioned is of greatsignificance in practice, and a primary object of my invention is toren'icdy the same. Namely the subject-matter of my invention is a devicewhich renders it unnecessary to exchange the blowing-pipe head eachtime. According to my invention the carries or carrying-frames holdingthe glass layers are not attached to a vertically-mow able blowing-pipehead but toa verticallymovable carrier which is provided-with anelectromagnetic, heat proof clutch -device, with which carrying-framesof optional form and weight can be seized, held and released withoutloss of time.

In order that the invention may be clearly understood I willnow explainthe same with reference to the accompanying drawings in which severalembodiments of my device are represented by way of example.

carrier at special shape of In said drawings k-F lgul'es 1 and 2 am Imeans, said grooves being adapted to retain vertical sectionalelevation, and top plan view, respectively, of one form of my clutch- 3device and Figs. 3, it and 5 are vertical sec tional ele 'ationslllllStltltlIlg various modes 'of ei'nploying the electromagnetic deviceand the carrying'fraine.

Referring to the drawing and firstly to Fi n l and Q, l dcsigii :05 avertically-movable, revoluble shaft which is mounted suitably in theframe of the machine. shaft is fixed a cast *arrier is a perforatroncarrier 2.

These poles will readily attract and hold a frame of magnetic metal whenthis is of To this This I iron body 2 having 1 a magnet winding 15 whichenables a pair 1 The various portions of the poles 16 some configurationditl'ering from that of:

the poles. The configuration of the poles shown is annular, suchconfiguration oi niagnet poles affords a pair of poles of opposite fsigns at every portion about its active face which will enable it'tooperate upon any form of object to be lifted but is particularly usefulsince it can engage at its sides a piece of magnetic metal ot differentconfiguration. 3

The poles 1G and 160 are disposed in the same plane and are continuousand are spaced apart and in the interspace is located the winding orcoil 15.

through which wires 26 and 27 pass, said of said carrier to the magneticwinding 15,

thus supplying said magnetic winding with an electric current. With theaid of such an electromagnetic device carrying-frames.

The carrier arm 1, is provided with an axial passage of differentshape-the frame 6 here shown in Figs. 1 and 2 being that required foruse in I'l'ltllilllg' a bath 7 of glass according to the describedprocess can be suspended most rapidly and most simply from the carrierand released from it, simply by closing and opening the electriccircuit. It is to be understood that the magnet winding 15 must be sofireproof that it can resist the action of the heat in theheating-chamber.

ltigs. 3 to 5 show various modes of employing the clectromagnet iccarrier. In Fig. 3 a part 17 of the inachine-fran'ie is illustrated, inwhich the shaft- 1 is suspended. This shaft is provided with anelectromagnetic carrier which is made exactly in accordance with theform shown in Fig. 1 and from which a' carrying-frame (l holding the1)L'UVlUllSlY-Sllllptld glass body 7 is suspended. The magnetic carryingframe (3, which is composed preferably of iron, provided with grooves28, or other suitable holding the previously shaped plastic mass. Thefull lines show the machine in its position the moment be fore the glassbody 7 is lowered, by lowering shaft 1. into the heating-chamher 19provided with the folding cover 18, whereas the dotted lines indicatethe carrier lowered with the glass body into the heatlug-chamber.

Fig... 14- and 5 represent two different constructional forms forfinishing blowing the glass body 7 removed from the carrier. Fig. lshows how the frame (3 detached from the carrier is suspended freelywith the glass sari; T on a traveling frame 20, after it has been blownout in known manner by means of a wet asbestos plate 21.

Fig 5 shows the finishing blowing of the glass sack T placed with theframe 6 on a blowing mold 21; this done by the mold 21 being tightlyclosed by a plate Coinpressed air or tensioned steam is admitted throughthis plate by means of a pipe or hose 2 In this event the plate 22 ispressed down by the lever 21- loaded by a weight 25 which rests on ashoulder on the plate 522. it is to be understood that this pressure maybe broughtv about by counterwcights, hydraulic pressure and in otherknown ways. Also, the vessels may be blown in known manner by means of awet asbestos cover instead of by air or steam pressure. Also, thefinishing blowing of the glass body can be done directly under thecarrier, 0. y. with a wet asbestos cover as illustrated in Fig. 4, orthe blowing mold with the glass sack may be removed from under thecarrier and then blown, as shown in Fig. 5. After the blowing isfinished the hollow glass body together with its carrying-frame may beagain connected to the carrier in order to heat once more in theheating-chamber the outside surfaces of the hollow glass body which havebeen cooled suddenly by iron surfaces.

in a machine of the character described for making hollow glass bodies,the combination of an iron carrying frame, provided with means adaptedto hold a mass of plastie, glassa reeiprocatory carrier therefor, and anelectromagnetic device mounted on the carrier for attracting andsuspending said frame from said carrier.

In witness whereof I have hereunto set my hand this 17th day of April1909 in the presence of the two subscribing witnesses.

